kernel/linux.git/sound/isa, branch master

ALSA: sscape: Add suspend and resume support

2026-04-12T08:00:34+00:00

The SoundScape ISA driver has lacked suspend and resume callbacks since commit 277e926c9b27 ("[ALSA] sscape - Use platform_device"). A plain snd_wss resume is not sufficient for SoundScape. Resume also needs to restore the board-specific gate-array routing, and non-VIVO boards need to reinitialize the probe-time MIDI firmware and MIDI control state when the MPU-401 side was enabled during probe. That firmware reload can be handled in-kernel because commit acd47100914b ("ALSA: sscape: convert to firmware loader framework") moved the driver to request_firmware(). Add ISA and ISA-PnP PM callbacks, reconfigure the board on resume, reload the non-VIVO MIDI firmware, restore the MIDI state, and then resume the WSS codec. If MIDI firmware reload fails, keep the WSS resume path alive and leave MIDI unavailable instead of failing the whole device resume. Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260411-alsa-sscape-pm-v2-2-aeb5682e14b0@gmail.com Signed-off-by: Takashi Iwai

ALSA: sscape: Cache per-card resources for board reinitialization

2026-04-12T08:00:18+00:00

The SoundScape driver programs the gate-array directly from the global resource arrays during probe. That is sufficient for initial bring-up, but a PM resume path also needs the resolved per-card IRQ, DMA, MPU IRQ and joystick settings after probe has finished. Store the resolved resources in struct soundscape and move the board setup into a reusable helper. Also factor the MIDI state programming so the same sequence can be reused by a later PM resume path. This is preparatory work for suspend/resume support and is not intended to change runtime behaviour. Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260411-alsa-sscape-pm-v2-1-aeb5682e14b0@gmail.com Signed-off-by: Takashi Iwai

ALSA: interwave: guard PM-only restore helpers with CONFIG_PM

2026-04-10T14:34:50+00:00

The InterWave PM patch added snd_interwave_restore_regs() and snd_interwave_restore_memory() as static helpers, but both are used only from the resume path under CONFIG_PM. On configurations without CONFIG_PM, such as alpha allyesconfig, this leaves both helpers unused and triggers -Wunused-function warnings with W=1. Move the PM-only helpers into the existing CONFIG_PM section. Keep __snd_interwave_restore_regs() outside the guard because it is also used during probe-time initialization. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202604101958.x16oNkfo-lkp@intel.com/ Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260410-alsa-interwave-pm-warning-fix-v1-1-434d14c9c262@gmail.com Signed-off-by: Takashi Iwai

ALSA: sc6000: Restore board setup across suspend

2026-04-10T12:59:47+00:00

snd_wss_resume() restores only the codec register image. The SC-6000 driver also programs card-specific DSP routing and enters MSS mode during probe, and that setup is not replayed after suspend. Cache the WSS chip pointer in the SC-6000 card state and wire ISA suspend and resume callbacks to the shared board-programming helper, so the board is reinitialized before the codec state is restored. This keeps the old/new DSP split in one place and restores the board-level MSS setup that the codec resume path does not cover. Signed-off-by: Cássio Gabriel Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20260410-alsa-sc6000-pm-v1-2-4d9e95493d26@gmail.com

ALSA: sc6000: Keep the programmed board state in card-private data

2026-04-10T12:59:47+00:00

The driver may auto-select IRQ and DMA resources at probe time, but sc6000_init_board() still derives the SC-6000 soft configuration from the module parameter arrays. When irq=auto or dma=auto is used, the codec is created with the selected resources while the board is programmed with the unresolved values. Store the mapped ports and generated SC-6000 board configuration in card-private data, build that configuration from the live probe results instead of the raw module parameters, and keep the probe-time board programming in a shared helper. This fixes the resource-programming mismatch and leaves the driver with a stable board-state block that can be reused by suspend/resume. Fixes: c282866101bf ("ALSA: sc6000: add support for SC-6600 and SC-7000") Signed-off-by: Cássio Gabriel Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20260410-alsa-sc6000-pm-v1-1-4d9e95493d26@gmail.com

ALSA: msnd: add ISA and PnP system sleep callbacks

2026-04-09T10:02:39+00:00

The msnd drivers do not implement system sleep callbacks today, so they have no defined way to recover DSP state after suspend. Add common card suspend/resume helpers, rerun the DSP initialization path on resume, restore the cached capture-source state, and rearm the shared IRQ for already-open users. Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260409-msnd-pm-support-v1-2-2abef720d0e7@gmail.com Signed-off-by: Takashi Iwai

ALSA: msnd: prepare system sleep support

2026-04-09T10:02:31+00:00

System suspend cannot work for msnd today because the PCM trigger paths reject SNDRV_PCM_TRIGGER_SUSPEND, and the driver has only refcounted IRQ helpers. Add the small helpers needed by the PM callbacks and restore master volume from the cached ALSA mixer state when the DSP is reinitialized. Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260409-msnd-pm-support-v1-1-2abef720d0e7@gmail.com Signed-off-by: Takashi Iwai

ALSA: interwave: add ISA and PnP suspend and resume callbacks

2026-04-08T07:55:03+00:00

interwave still leaves both its ISA and PnP PM callbacks disabled even though the shared GUS suspend and resume path now exists. This board needs InterWave-specific glue around the shared GUS PM path. The attached WSS codec has its own register image that must be saved and restored across suspend, the InterWave-specific GF1 compatibility, decode, MPU401, and emulation settings must be rewritten after the shared GF1 resume path reinitializes the chip, and the probe-detected InterWave memory layout must be restored without rerunning the destructive DRAM/ROM detection path. Track the optional STB TEA6330T bus at probe time, restore its cached mixer state after resume, add resume-safe helpers for the InterWave register and memory-configuration state, and wire both the ISA and PnP front-ends up to the shared GUS PM helpers. The resume path intentionally restores only the cached hardware setup. It does not attempt to preserve sample RAM contents across suspend. Signed-off-by: Cássio Gabriel Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20260407-alsa-interwave-pm-v2-3-8dd96c6129e9@gmail.com

ALSA: gusmax: add ISA suspend and resume callbacks

2026-04-06T09:08:36+00:00

gusmax still leaves its ISA PM callbacks disabled even though the shared GF1 suspend and resume path now exists. This board needs one extra piece of PM glue around the shared GF1 helpers. The attached WSS codec has its own register image that must be saved and restored across suspend, and the MAX control register must be rewritten on resume before the codec and GF1 sides are brought back. Use the existing wss->suspend() and wss->resume() hooks for the codec, then wire the driver up to the shared GUS suspend and resume helpers for the GF1 side. Signed-off-by: Cássio Gabriel Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20260406-b4-alsa-gus-isa-pm-v1-4-b6829a7457cd@gmail.com

ALSA: gusextreme: add ISA suspend and resume callbacks

2026-04-06T09:08:35+00:00

gusextreme still leaves its ISA PM callbacks disabled because the shared GF1 core had no suspend and resume path suitable for PM recovery. Resume on this board needs one extra step before the shared GF1 path can touch the chip again: the ES1688 side must restore the GF1 routing. Split that routing sequence into a helper, reuse it for probe and resume, reset the ES1688 side first on resume, and then wire the driver up to the shared GUS PM helpers. This restores usable post-resume GF1 operation on GUS Extreme without rerunning probe-only detection in the shared GF1 path. Signed-off-by: Cássio Gabriel Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20260406-b4-alsa-gus-isa-pm-v1-3-b6829a7457cd@gmail.com